function labagif(){
    for(var i=0; i<document.images.length; i++) 
      { 
    var img = document.images[i] 
    var imgName = img.src.toLowerCase();
    if (imgName.indexOf("laba.gif") >= 0) 
      { 
        img.style.cursor="hand";
        img.style.cursor="pointer";
        img.onclick = function () {winop('http://www.wbtc.com.tw/168club/openevent/index.asp?ad=q');}

      } 
      } 
}